Jump to main content
Jump to site search


Reversible phase transition and switchable dielectric behaviors triggered by rotation and order-disorder motions of crowns

Author affiliations

Abstract

Solid-to solid-state reversible phase transitions are widely used in switchable dielectrics, ferroelectrics, piezoelectrics, and pyroelectric and non-linear optical materials. Herein we report a new crown ether clathrate, [Habf-(18-crown-6)1.5]+ [PF6] (Habf = p-ammonium benzene formamide) which shows an interesting reversible phase transition near room temperature (263 K). X-ray single crystal diffraction analysis shows that the synergetic rotation motion between the 18-crown-6 crown ethers and the order–disorder motions of both hexafluorophosphate guest anions and 18-crown-6 crown ether host molecules lead to the phase transition. This reversible phase transition is confirmed by an evident thermal anomaly behavior around 263 K. The apparent step-like dielectric change around the phase transition indicates that it has potential application in dielectric switches.

Graphical abstract: Reversible phase transition and switchable dielectric behaviors triggered by rotation and order-disorder motions of crowns

Back to tab navigation

Supplementary files

Publication details

The article was received on 01 Jan 2018, accepted on 03 Feb 2018 and first published on 05 Feb 2018


Article type: Paper
DOI: 10.1039/C8DT00003D
Citation: Dalton Trans., 2018, Advance Article
  •   Request permissions

    Reversible phase transition and switchable dielectric behaviors triggered by rotation and order-disorder motions of crowns

    Y. Liu, H. Zhou, S. Chen, Y. Tan, C. Wang, C. Yang, H. Wen and Y. Tang, Dalton Trans., 2018, Advance Article , DOI: 10.1039/C8DT00003D

Search articles by author

Spotlight

Advertisements